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Effects of polycyclic aromatic hydrocarbons (PAHs) on an aquatic ecosystem: acute toxicity and community-level toxic impact tests of benzo[a]pyrene using lake zooplankton community.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ikenaka, Yoshinori Sakamoto, Masaki Nagata, Takamaru Takahashi, Hirokazu Miyabara, Yuichi Hanazato, Takayuki Ishizuka, Mayumi Isobe, Tomohiko Kim, Jun-Woo Chang, Kwang-Hyeon |
| Copyright Year | 2013 |
| Abstract | We estimated acute toxicity of benzo[a]pyrene (B[a]P) using two cladoceran species, Ceriodaphnia reticulata and Daphnia magna, and also analyzed its impact on zooplankton community throughout an exposure experiment using small-scale mesocosms. LC(50) of B[a]P for C. reticulata and D. magna was 4.3 and 4.7 µg/l, respectively. However, individuals fed with Chlorella showed higher LC(50), 6.1 µg/l for C. reticulata and 8.0 µg/l for D. magna. In the exposure experiment, we examined the impact of B[a]P on zooplankton community using conceivable concentrations in the environment (5 and 10 µg/l) using typical zooplankton community in eutrophicated systems. Despite the residence time of B[a]P in the water column was short as < 4 days, application of B[a]P induced decrease of zooplankton abundance. However, the recovery pattern was different among cladocerans and rotifers. Consequently, B[a]P showed insecticide-like impacts, suppressing cladoceran populations and inducing the dominance of rotifers particularly under high concentration (10 µg/l). Results have suggested that, even such short duration of B[a]P in the water body can have impact on zooplankton abundance and community structure. Since B[a]P easily precipitate to the bottom and rapidly disappears from the water body, careful monitoring and further assessment of the potential toxicity of polycyclic aromatic hydrocarbons are necessary. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.jstage.jst.go.jp/article/jts/38/1/38_131/_pdf |
| PubMed reference number | 23358147v1 |
| Volume Number | 38 |
| Issue Number | 1 |
| Journal | The Journal of toxicological sciences |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | AROMATICS Adverse reaction to drug Benzo(a)pyrene Body water (substance) CHLORELLA (pharmacologic substance) Daphnia Hydrocarbons Polycyclic Hydrocarbons, Aromatic Zooplankton |
| Content Type | Text |
| Resource Type | Article |
